PartsTable
Technical Data Sheet
1655818-11 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ELBOW,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1118 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.469 INCHES NOMINAL SECOND END IN, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: GASKET SEAL, COMPRESSION (TUBE) FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-726-7358, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1655818-11
NSN: 4730-00-726-7358
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1118 OVERALL
flow_angle90.0 DEGREES
leg_length1.469 INCHES NOMINAL SECOND END IN
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_styleGASKET SEAL, COMPRESSION (TUBE) FIRST END
surface_treatmentPHOSPHATE INSIDE
nominal_thread_size0.500 INCHES SECOND END IN
thread_series_designatorUNF FIRST END
nominal_pipe_size_accommodated0.500 INCHES SECOND END IN
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.625 INCHES FIRST END IN
NSN4730-00-726-7358
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1655818-11 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES SECOND END IN
LEG LENGTH: 1.125 INCHES NOMINAL FIRST END IN
CONNECTION STYLE: GASKET SEAL, COMPRESSION (TUBE) FIRST END
FLOW ANGLE: 90.0 DEGREES
SURFACE TREATMENT: PHOSPHATE INSIDE
THREAD SERIES DESIGNATOR: UNF FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END IN
LEG LENGTH1.125 INCHES NOMINAL FIRST END IN
CONNECTION STYLEGASKET SEAL, COMPRESSION (TUBE) FIRST END
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEPLAIN (PIPE) SECOND END
SURFACE TREATMENTPHOSPHATE INSIDE
THREAD SERIES DESIGNATORUNF FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORNPT SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
39P00325000Interchangeable
interchangeable cross-reference
interchangeable
40510Interchangeable
interchangeable cross-reference
interchangeable
D-638Interchangeable
interchangeable cross-reference
interchangeable
RC-16Interchangeable
interchangeable cross-reference
interchangeable
BUG4-8Interchangeable
interchangeable cross-reference
interchangeable
667-0320-010Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1655818-11?
1655818-11 is a ELBOW,PIPE TO TUBE.
What parts can replace 1655818-11?
There are 11 known substitutes for 1655818-11: 39P00325000, 40510, D-638 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1655818-11?
1655818-11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-726-7358. This indicates validated use in U.S. government and defense supply chains.
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